public class VehicleClient
{
	 public static void main(String args[])
	 {
		System.out.println("输出相关数据");
		Car car=new Car(4,1500,4);  //创建一个Car类对象
		car.show();
		Trunk trunk=new Trunk(8,7000,3,25000);
		trunk.show();
		Vehicle vehicle= new Car(4,2000,4);
		vehicle.show();
		if(vehicle instanceof Car){
			((Car)vehicle).show();
		}
		else{
			System.out.println("不能强制转换类型！");
		}		
vehicle=new Trunk(9,8000,4,30000);
		vehicle.show();
	}
}
